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    <title>Document</title>
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    <!-- 编写函数norepeat(arr)将数组的重复元素去掉，并返回新数组(面试题) -->

    <script>
        function norepeat(arr) {
            for (var i = 0; i < arr.length; i++) {
                for (var j = i+1; j < arr.length; j++) {
                    if (arr[i] == arr[j]) {
                     arr.splice(j, 1);
                     j--;
                    //  第三个元素出现重复的数 
                    }
                }
            }
            return  arr
        }
        console.log(norepeat([ 8, 12, 8, 7, 8]));
    </script>
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